package com.jt.controller;


import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@CrossOrigin
public class PortController {
    /*如何动态获取端口号
    * spring容器启动时，自动加载yml文件。
    * */

    @Value("${server.port}")
    private   Integer  port;
    @GetMapping("/getPort")
    public  String getPort(){
        return  "端口号"+port;
    }
}
